Silver amalgam fillings predominantly contain silver a known bactericidal agent and mercury which a known toxin and has bactericidal property. So how is it that the plaque bacteria survive near the ...

I am trying to reproduce E. coli interrupted mating using an HFR strain, and I read that the cultures should be vigorously shaken at times to interrupt the DNA transfer from the F+(HFR) donors to the ...

I made lemon juice 6 month ago.
I just washed the lemon using brush and then cut them into pieces.
Then I put one layer of lemon in the bottle followed by one layer of
sugar
Again one layer of lemon ...

I am falling short of LB agar plates and I have a plate with less LB agar poured. I meant, the plate is not fully filled with the agar (it was the last plate I poured the medium into). Some part of ...

I am thinking of why some patients do not have natural immunity after exposure to the A-B toxin of diphthria.
I think the A-B exotoxin is the key factor causing this disease and should trigger memory ...

I am part of a project elucidating some structures that are required for bacterial transformation. We have the opportunity to screen inhibitors of the system to stop it from functioning. I am not a ...

I think the main reason is the natural selection that is causing methicillin-resistance.
However, I am not completely sure what this means practically.
Here, the original question:
MRSA was isolated ...

If a person contracts a virus, viral conjunctivitis for example, is it possible for the individual to become "reinfected" with the exact same strain of the virus once the person has it treated and the ...

I am curious as to the processes and mechanisms involved in the extension of pseudopodia in amoeba. How does the cell know and control the direction and extent of pseudopodia formation at a molecular ...

Most microalgae have rigid cell walls.
Dunaliella Salina is a pretty famous example of an algae with no cell wall, but just a plasma membrane.
Are there any other microalgae without a cell wall?. I ...

I'm currently sick because of scarlet fever but I got treated with antibiotics. I know that after 1.5 day using antibiotics the streptococci I release at home are dangerous anymore. But my question ...

I have a microbiology question.
When we put bacterial cells in sucrose solution with concentration higher than 0.5M we observe plasmolysis - the cytoplasmic membrane detaches from the cell wall due ...

Quite simply, some organisms metabolize glucose under anaerobic conditions via Glucose->(2) Pyruvic Acid->(2)Ethyl Alcohol. Some organisms, however, metabolize to lactic acid.
When did such a process ...

I understand that it primarily enters the body through the nose by by "feeding on the olfactory neurons in the nose" as answered here in a different question. Would the nerve cells in the eyes present ...

It's just a small microbiology lab that currently records everything on paper, and there's quite few mutants as well. Is Excel commonly used for this sort of thing? Or is there a better software to ...

I was reading through the Karr et al. (2012) whole-cell computational model. One of the things they did was to induce single-gene disruptions in their model. They observed several to be fatal, but:
...

We are regularly doing bacterial transformation and subculture from plate to liquid media to extract DNA. This usually goes very well and is straightforward, but occasionally, the colonies that grew ...

I read on this question What is in the space between neurons in a brain? that there is actually not much empty space in a brain. But my question is slightly different. Is there a visual demonstration ...

I have encountered this black-colored growth on onion skins a lot. It seems to develop over the course of weeks and I have rarely, if ever, encountered the material on fresh ones. If I peel the onion ...

A friend used potassium permanganate solution to treat tinea on the hands/feet but after some initial success, the tinea seems to be making a comeback. Could the fungus develop resistance to potassium ...

Last year I read a course in biology. During that course I learnt that Protozoa like Lamblia intestinalis or Entamoeba hystolitica form cysts in unfavourable conditions.
This year I read a course in ...